#include <bits/stdc++.h>
#include <iostream>
#include <set>
#include <unordered_map>
using namespace std;

#define int long long

signed main()
{
    int a , b;
    cin >> a >> b;
    cout << a << b << endl;
    vector<int>a;
    for(int i = 0;i < n;i ++) cin >> a[i];
    while(true)
    {
        vector<int>a;
    }
    return 0;
}